404 lines
11 KiB
C
404 lines
11 KiB
C
/* $Xorg: listdev.c,v 1.4 2001/02/09 02:04:34 xorgcvs Exp $ */
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/************************************************************
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Copyright 1989, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Hewlett-Packard not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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********************************************************/
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/* $XFree86: xc/programs/Xserver/Xi/listdev.c,v 3.4 2001/12/14 19:58:58 dawes Exp $ */
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/***********************************************************************
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*
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* Extension function to list the available input devices.
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*
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*/
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#define NEED_EVENTS
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#define NEED_REPLIES
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#include "X.h" /* for inputstr.h */
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#include "Xproto.h" /* Request macro */
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#include "inputstr.h" /* DeviceIntPtr */
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#include "XI.h"
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#include "XIproto.h"
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#include "XIstubs.h"
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#include "extnsionst.h"
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#include "extinit.h" /* LookupDeviceIntRec */
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#include "exglobals.h" /* FIXME */
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#include "listdev.h"
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#define VPC 20 /* Max # valuators per chunk */
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/***********************************************************************
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*
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* This procedure lists the input devices available to the server.
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*
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*/
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int
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SProcXListInputDevices(client)
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register ClientPtr client;
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{
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register char n;
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REQUEST(xListInputDevicesReq);
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swaps(&stuff->length, n);
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return(ProcXListInputDevices(client));
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}
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/***********************************************************************
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*
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* This procedure lists the input devices available to the server.
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*
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*/
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int
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ProcXListInputDevices (client)
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register ClientPtr client;
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{
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xListInputDevicesReply rep;
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int numdevs;
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int namesize = 1; /* need 1 extra byte for strcpy */
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int size = 0;
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int total_length;
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char *devbuf;
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char *classbuf;
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char *namebuf;
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char *savbuf;
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xDeviceInfo *dev;
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DeviceIntPtr d;
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REQUEST_SIZE_MATCH(xListInputDevicesReq);
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rep.repType = X_Reply;
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rep.RepType = X_ListInputDevices;
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rep.length = 0;
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rep.sequenceNumber = client->sequence;
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AddOtherInputDevices ();
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numdevs = inputInfo.numDevices;
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for (d=inputInfo.devices; d; d=d->next)
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SizeDeviceInfo (d, &namesize, &size);
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for (d=inputInfo.off_devices; d; d=d->next)
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SizeDeviceInfo (d, &namesize, &size);
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total_length = numdevs * sizeof (xDeviceInfo) + size + namesize;
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devbuf = (char *) xalloc (total_length);
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classbuf = devbuf + (numdevs * sizeof (xDeviceInfo));
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namebuf = classbuf + size;
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savbuf = devbuf;
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dev = (xDeviceInfoPtr) devbuf;
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for (d=inputInfo.devices; d; d=d->next,dev++)
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ListDeviceInfo (client, d, dev, &devbuf, &classbuf, &namebuf);
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for (d=inputInfo.off_devices; d; d=d->next,dev++)
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ListDeviceInfo (client, d, dev, &devbuf, &classbuf, &namebuf);
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rep.ndevices = numdevs;
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rep.length = (total_length + 3) >> 2;
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WriteReplyToClient (client, sizeof (xListInputDevicesReply), &rep);
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WriteToClient(client, total_length, savbuf);
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xfree (savbuf);
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return Success;
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}
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/***********************************************************************
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*
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* This procedure calculates the size of the information to be returned
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* for an input device.
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*
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*/
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void
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SizeDeviceInfo (d, namesize, size)
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DeviceIntPtr d;
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int *namesize;
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int *size;
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{
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int chunks;
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*namesize += 1;
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if (d->name)
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*namesize += strlen (d->name);
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if (d->key != NULL)
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*size += sizeof (xKeyInfo);
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if (d->button != NULL)
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*size += sizeof (xButtonInfo);
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if (d->valuator != NULL)
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{
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chunks = ((int) d->valuator->numAxes + 19) / VPC;
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*size += (chunks * sizeof(xValuatorInfo) +
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d->valuator->numAxes * sizeof(xAxisInfo));
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}
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}
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/***********************************************************************
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*
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* This procedure lists information to be returned for an input device.
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*
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*/
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void
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ListDeviceInfo (client, d, dev, devbuf, classbuf, namebuf)
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ClientPtr client;
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DeviceIntPtr d;
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xDeviceInfoPtr dev;
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char **devbuf;
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char **classbuf;
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char **namebuf;
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{
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CopyDeviceName (namebuf, d->name);
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CopySwapDevice (client, d, 0, devbuf);
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if (d->key != NULL)
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{
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CopySwapKeyClass(client, d->key, classbuf);
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dev->num_classes++;
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}
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if (d->button != NULL)
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{
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CopySwapButtonClass(client, d->button, classbuf);
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dev->num_classes++;
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}
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if (d->valuator != NULL)
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{
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dev->num_classes += CopySwapValuatorClass(client, d->valuator, classbuf);
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}
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}
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/***********************************************************************
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*
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* This procedure copies data to the DeviceInfo struct, swapping if necessary.
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*
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* We need the extra byte in the allocated buffer, because the trailing null
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* hammers one extra byte, which is overwritten by the next name except for
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* the last name copied.
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*
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*/
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void
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CopyDeviceName (namebuf, name)
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char **namebuf;
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char *name;
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{
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char *nameptr = (char *) *namebuf;
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if (name)
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{
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*nameptr++ = strlen (name);
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strcpy (nameptr, name);
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*namebuf += (strlen (name)+1);
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}
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else
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{
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*nameptr++ = 0;
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*namebuf += 1;
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}
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}
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/***********************************************************************
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*
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* This procedure copies data to the DeviceInfo struct, swapping if necessary.
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*
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*/
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void
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CopySwapDevice (client, d, num_classes, buf)
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register ClientPtr client;
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DeviceIntPtr d;
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int num_classes;
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char **buf;
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{
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register char n;
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xDeviceInfoPtr dev;
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dev = (xDeviceInfoPtr) *buf;
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dev->id = d->id;
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dev->type = d->type;
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dev->num_classes = num_classes;
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if (d == inputInfo.keyboard)
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dev->use = IsXKeyboard;
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else if (d == inputInfo.pointer)
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dev->use = IsXPointer;
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else
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dev->use = IsXExtensionDevice;
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if (client->swapped)
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{
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swapl(&dev->type, n); /* macro - braces are required */
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}
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*buf += sizeof (xDeviceInfo);
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}
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/***********************************************************************
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*
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* This procedure copies KeyClass information, swapping if necessary.
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*
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*/
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void
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CopySwapKeyClass (client, k, buf)
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register ClientPtr client;
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KeyClassPtr k;
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char **buf;
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{
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register char n;
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xKeyInfoPtr k2;
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k2 = (xKeyInfoPtr) *buf;
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k2->class = KeyClass;
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k2->length = sizeof (xKeyInfo);
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k2->min_keycode = k->curKeySyms.minKeyCode;
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k2->max_keycode = k->curKeySyms.maxKeyCode;
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k2->num_keys = k2->max_keycode - k2->min_keycode + 1;
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if (client->swapped)
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{
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swaps(&k2->num_keys,n);
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}
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*buf += sizeof (xKeyInfo);
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}
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/***********************************************************************
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*
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* This procedure copies ButtonClass information, swapping if necessary.
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*
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*/
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void
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CopySwapButtonClass (client, b, buf)
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register ClientPtr client;
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ButtonClassPtr b;
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char **buf;
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{
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register char n;
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xButtonInfoPtr b2;
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b2 = (xButtonInfoPtr) *buf;
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b2->class = ButtonClass;
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b2->length = sizeof (xButtonInfo);
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b2->num_buttons = b->numButtons;
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if (client->swapped)
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{
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swaps(&b2->num_buttons,n); /* macro - braces are required */
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}
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*buf += sizeof (xButtonInfo);
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}
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/***********************************************************************
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*
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* This procedure copies ValuatorClass information, swapping if necessary.
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*
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* Devices may have up to 255 valuators. The length of a ValuatorClass is
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* defined to be sizeof(ValuatorClassInfo) + num_axes * sizeof (xAxisInfo).
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* The maximum length is therefore (8 + 255 * 12) = 3068. However, the
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* length field is one byte. If a device has more than 20 valuators, we
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* must therefore return multiple valuator classes to the client.
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*
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*/
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int
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CopySwapValuatorClass (client, v, buf)
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register ClientPtr client;
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ValuatorClassPtr v;
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char **buf;
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{
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int i, j, axes, t_axes;
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register char n;
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xValuatorInfoPtr v2;
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AxisInfo *a;
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xAxisInfoPtr a2;
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for (i=0,axes=v->numAxes; i < ((v->numAxes+19)/VPC); i++, axes-=VPC) {
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t_axes = axes < VPC ? axes : VPC;
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if (t_axes < 0)
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t_axes = v->numAxes % VPC;
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v2 = (xValuatorInfoPtr) *buf;
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v2->class = ValuatorClass;
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v2->length = sizeof (xValuatorInfo) + t_axes * sizeof (xAxisInfo);
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v2->num_axes = t_axes;
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v2->mode = v->mode & DeviceMode;
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v2->motion_buffer_size = v->numMotionEvents;
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if (client->swapped)
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{
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swapl(&v2->motion_buffer_size,n);
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}
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*buf += sizeof (xValuatorInfo);
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a = v->axes + (VPC * i);
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a2 = (xAxisInfoPtr) *buf;
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for (j=0; j<t_axes; j++) {
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a2->min_value = a->min_value;
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a2->max_value = a->max_value;
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a2->resolution = a->resolution;
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if (client->swapped) {
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swapl(&a2->min_value,n);
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swapl(&a2->max_value,n);
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swapl(&a2->resolution,n);
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}
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a2++;
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a++;
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*buf += sizeof (xAxisInfo);
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}
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}
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return (i);
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}
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/***********************************************************************
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*
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* This procedure writes the reply for the XListInputDevices function,
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* if the client and server have a different byte ordering.
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*
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*/
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void
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SRepXListInputDevices (client, size, rep)
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ClientPtr client;
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int size;
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xListInputDevicesReply *rep;
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{
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register char n;
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swaps(&rep->sequenceNumber, n);
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swapl(&rep->length, n);
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WriteToClient(client, size, (char *)rep);
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}
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